The window had been replaced last week during routine maintenance.

那窗在上星期的例行检修中已被换掉了。

Perform and document routine maintenance.

执行和记录日常维护。

Or is the site just down for routine maintenance?

或者网站只是进行日常维护？

It also facilitates routine maintenance works.

这也有利于日常维护。

For that matter, routine maintenance on your reels and fly lines.

对于这件事，日常的维护您的卷轴和飞行路线。